Home / 31,688.85-47,520.51-11,956.66

Finding the Fourth Proportional to 31,688.85, 47,520.51 and 11,956.66

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Solution

The fourth proportional to 31,688.85, 47,520.51 and 11,956.66 is: 17,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.85 : 47,520.51 = 11,956.66 : x
  2. Step 2: Convert to fraction form
    31,688.85/47,520.51 = 11,956.66/x
  3. Step 3: Cross multiply
    31,688.85x = 47,520.51 × 11,956.66
  4. Step 4: Simplify right side
    31,688.85x = 568,186,581.10
  5. Step 5: Solve for x
    x = 568,186,581.10/31,688.85
  6. Step 6: Final answer
    x = 17,930.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.